Lamella module of a suspended clarifier

Abstract

The invention relates to a lamella module (2) of an inclined clarifier with a plurality of lamella plates (22) arranged parallel to each other and held at an angle to the horizontal in the installed state, wherein the lamella module (2) is designed as a plug-in system with end plates (20) between which several longitudinal plates (21) run and the lamella plates (22) are held between the end plates (20) on the longitudinal plates (21), wherein the connections between end plates (20) and longitudinal plates (21) and / or between the longitudinal plates (21) and the lamella plates (22) are designed as detachable plug connections.

Description

[0001] The invention relates to a lamellar module of an inclined clarifier with a plurality of lamellar plates arranged parallel to each other and held at an angle to the horizontal in the installed state.

[0002] Inclined separators, also known as lamella separators, are sedimentation systems used in settling tanks of water treatment plants to treat the flowing water by sedimentation. They often consist of parallel lamella plates through which the water flows. The effect is that the sediments from the water only have to settle the small distance of a few centimeters between the lamella plates instead of the entire depth of the settling tank. This results in a significantly improved separation efficiency. When installed, the lamella plates are arranged at an angle to the horizontal to allow the settled sludge to slide to the bottom of the tank. For an example, reference can be made to DE 20 30 618 A1.

[0003] To simplify the manufacturing and assembly of such inclined clarifiers, the lamellar plates are now grouped into lamellar modules, which are suspended in the settling tank in the required number. These lamellar modules are typically prefabricated as welded structures and are quite heavy; furthermore, their size makes transport to the installation site complex. The lamellar modules are suspended from support beams, which, after placement in the settling tank, creates dead zones that are not filled with lamellar modules. Therefore, the settling tanks must be periodically pumped out and cleaned. All of this appears to be in need of improvement.

[0004] The object of the invention is to propose a lamellar module of an inclined clarifier of the type mentioned above, which can be flexibly adapted to a wide variety of installation situations and in particular sizes of settling tanks, can be rationally prefabricated and can be assembled ready for use and placed in the settling tank at the place of use with little effort.

[0005] To solve the problem posed, the invention proposes the design of a lamellar module of an inclined clarifier according to the features of claim 1.

[0006] Advantageous embodiments and further developments of the lamellar module according to the invention are the subject of the dependent claims.

[0007] Furthermore, the invention also relates to a settling basin with at least one lamellar module according to the invention that can be suspended from the top of the settling basin.

[0008] The invention proposes to design the lamella module as a plug-in system made of prefabricated elements. This plug-in system comprises end plates between which several longitudinal plates run, and a plurality of lamella plates which are held between the end plates on the longitudinal plates, wherein the connections between the end plates and longitudinal plates and / or between the longitudinal plates and the lamella plates are designed as detachable plug connections. Preferably, all connections between end plates and longitudinal plates, as well as between the longitudinal plates and the lamella plates, are designed as detachable plug connections.

[0009] According to the invention, it is thus possible to prefabricate the elements of the plug-in system for forming the lamellar module according to the invention—namely, end plates, longitudinal plates, and lamellar plates—in a mass production process, largely utilizing identical parts, and to transport them to the installation site in a space-saving manner. Once at the installation site, the elements can be easily and preferably without tools connected to form the ready-to-use lamellar module, thanks to the detachable plug connections. Adjustments to the geometry and prevailing spatial conditions of the settling basin can be easily made by varying the number and size of the end plates, longitudinal plates, and / or lamellar plates used.

[0010] According to one aspect of the invention, the end plates of each longitudinal plate have an arrangement of slots into which corresponding protruding hooks of the longitudinal plates can be detachably inserted. In this way, a preferably right-angled connection between the end plates and the longitudinal plates can be easily established by inserting the protruding hooks of the longitudinal plates into the provided slots of the end plates.

[0011] According to a further aspect of the invention, each longitudinal plate has a plurality of slots extending obliquely to the horizontal, starting from a longitudinal edge running along a top surface in the installed state, and each lamella plate has a slot corresponding to the length of the slots of the longitudinal plate, starting from a longitudinal edge running along a bottom surface in the installed state, such that the longitudinal plates and the lamella plates can be detachably inserted into one another at right angles in the area of ​​the slots. The slots in the longitudinal plates, extending obliquely to the horizontal, not only determine the distance between adjacent lamella plates, but also hold them in the desired orientation, in which they are held obliquely to the horizontal in the installed state, for example at an angle of 60°.

[0012] Another suggestion of the invention provides that the longitudinal plates have a plurality of openings adjacent to the underside which runs opposite to the top, which serve to allow the water to be cleaned to enter.

[0013] In the installed state below the lamella plates, according to a further proposal of the invention, crossbeams can run between the end plates, each having plug-in recesses on its upper side facing the lamella plates for inserting a lamella plate and being detachably inserted into corresponding clamping slots in the end plates by means of projecting clamping hooks. The crossbeams serve as a lower end stop for the lamella plates inserted into the plug-in slots of the longitudinal plates and simultaneously fix the end plates, which define the respective end faces of the lamella module, in their relative position.

[0014] According to a further aspect of the invention, in the installed state, an upper surface of the longitudinal plates is detachably clamped into a clamping strip in the area of ​​an insertion slot formed in the clamping strip. This clamping strip ensures that the lamella module has high stability and simultaneously aligns the lamella plates inserted into the longitudinal plates precisely with each other.

[0015] According to a further aspect of the invention, the lamella module according to the invention, when installed, is equipped on its upper side with retaining rods and rollers mounted on these rods, by means of which the lamella module can be suspended from a support beam in a settling basin. The retaining rods can, in particular, be fixed to the clamping strip and hold the rollers at their opposite ends, so that the entire lamella module can be inserted along the rollers into a correspondingly rail-like support beam and then easily lowered into the settling basin. The lamella modules can be just as easily removed from the settling basin and cleaned in the opposite direction if cleaning is required.

[0016] The assembly of the lamellar module according to the invention, consisting of end plates, longitudinal plates and lamellar plates which can be plugged into one another with plug connections, can also be facilitated by providing the end plates with a top flange and / or the longitudinal plates and / or the lamellar plates with top bores for the attachment of a lifting device in order to be able to move the components mechanically.

[0017] The end plates, longitudinal plates and / or lamellar plates can be prefabricated from sheet metal, for example stainless steel sheet, and laser-cut into their specific shape, but production from suitable plastic, especially fiber-reinforced hard plastics, is also possible.

[0018] According to a further aspect of the invention, the lamellae are designed with progressively increasing widths from one end plate to the next, such that the lamella module is conical when viewed in a vertical projection. A plurality of such conically shaped lamellae modules, when joined together along the longitudinal plates, form a ring-shaped arrangement, so that circular settling basins can also be filled with the lamellae modules according to the invention without having to accept undesirable dead spaces.

[0019] Finally, the invention also includes a settling basin with at least one lamellar module that can be suspended from the top of the settling basin, as described above.

[0020] Further embodiments and details of the invention are explained below with reference to exemplary embodiments in the drawing. The drawing shows: Figure 1 shows a perspective view of a rectangular settling tank formed with lamella modules according to the invention; Figure 2 shows the settling tank according to the invention. Figure 1 in a cutaway side view; Figure 3a a lamella module according to the invention in side view; Figure 3b the enlarged detail according to Figure 3a Figure 3C shows the lamella module according to Figure 3a in a front view rotated by 90°; Figure 4 the view of an end plate of the lamella module according to the invention; Figure 5 the view of a longitudinal plate of the lamella module according to the invention; Figure 6 the view of a lamella plate of the lamella module according to the invention; Figure 7 the side view of a cross member of the lamella module according to the invention; Figure 8 the view of a clamping strip of the lamella module according to the invention; Figure 9 top view of a round settling basin formed with lamella modules according to the invention; Figure 10 the top view of a lamella module according to Figure 9 .

[0021] From the Figures 1 and 2 A rectangular settling tank 1, formed by longitudinal walls 10 and transverse walls 11, is shown, which is divided into two chambers of different sizes by a partition wall 12. In the larger of the two chambers, lamella modules 2 of an inclined clarifier are suspended from support beams 13 to effect the settling of sediments from the liquid, usually rainwater or wastewater, directed into the settling tank 1. The lamella modules 2 are dimensioned such that they almost completely fill the settling tank 1 without any lateral dead spaces to the longitudinal and transverse walls 10, 11.

[0022] According to the descriptions in the Figures 3a to 3c Each individual lamella module 2 has a structure made up of detachably interlocking components. End plates 20 are attached to the front faces as shown in the illustration. Figure 3cprovided, between which, in the illustrated embodiment, a total of three longitudinal plates 21 extend in a right-angled arrangement to the end plates 20, which in the illustration according to Figure 3a lie congruently one behind the other in the plane of the drawing.

[0023] Furthermore, a large number of lamella plates 22 are mounted at an angle to the horizontal on the longitudinal plates 21, as described in more detail below. These lamella plates effect the actual setting process. For position fixing, clamping strips 23 run along the upper side of the longitudinal plates 21 and crossbeams 26 run along the underside, into which the lower ends of the lamella plates 22 are inserted as described below.

[0024] It can also be seen that support rods 24 with rollers 25 arranged on the upper side are attached to the upper clamping strips 23, with which the individual lamella modules 2 can be inserted laterally into the support beams 13 and from there lowered into the settling basin 1.

[0025] Essential for the construction of the lamella module 2 is that its components, namely end plates 20, longitudinal plates 21 and lamella plates 22, are all detachably and preferably tool-free attached to one another as a plug-in system with detachable plug connections.

[0026] For this purpose, the two end plates 20, provided as end caps and outermost plates, are shown in the illustration in the Figure 4 a rectangular shape, wherein the top side is marked with O in the installed state and the bottom side with U in the installed state, as is also the case in the following descriptions of the longitudinal plates 21 and lamellar plates 22.

[0027] The end plates 20 have several slots 200 arranged in three rows, for which the end plate 20 is laser-cut, for example, from a stainless steel sheet. Here, five equally spaced slots 200 are shown in three rows, arranged one above the other: once along the left edge, once along the center line, and once along the right edge. Each of these rows of slots 200 serves to receive a longitudinal plate 21, which is further detailed in the Figure 5 as is evident.

[0028] Accordingly, the longitudinal plates 21 are each provided with five projecting end-face hooks 210 on their two opposite end faces, which can be inserted into a series of the slots 200 of the end plates 20 and releasably locked there, so that a right-angled alignment of the longitudinal plates 21 between the end plates 20, which are spaced apart from each other by the width of the longitudinal plates 21, can be achieved. In the illustrated embodiment, three longitudinal plates 21 thus extend between the two end plates 20.

[0029] The longitudinal plates 21 have a plurality of slots 212 extending from the top O over their essentially half height between the top O and the bottom U, which run parallel to each other at an angle to the horizontal, here for example 60°, as is desirable for the arrangement of the lamella plates 22.

[0030] Correspondingly, the lamellar plates 22 are as shown in the illustration in Figure 6 accordingly, from the underside U, of the same length as the

[0031] The slots 212 are equipped with slots 220 extending approximately to the center, making it possible to insert a large number of lamella panels 22, each with its slot 220, into one of the slots 212 of the longitudinal panels 21 in an intersecting arrangement. This allows the lamella panels 22 to be easily attached in large numbers in the desired orientation. On their underside, the lamella panels 22 rest on several crossbeams 26 extending between the end plates 20, which are formed by the Figure 7The crossbeams 26 are engaged in corresponding clamping slots 201 of the end plates 20 by means of tension hooks 261 projecting from the front, thus providing further fixation. In addition, the crossbeams 26 are provided on their upper side with plug-in recesses 260, into which the lower edge area of ​​the lamella plates 22 inserted into the longitudinal plates 21 engages.

[0032] Furthermore, the end plates 20 are as shown in the illustration. Figure 4 along their upper surface O are provided with a flange 202 which, corresponding to the arrangement of the rows of slots 200, has mounting surfaces 203 in which several mounting holes 204 are arranged. The longitudinal plates 21, extending at right angles from the end plates 20, with the lamellar plates 22 inserted at right angles thereto, are then fitted with the Figure 8The visible clamping strips 23 are attached by inserting the edge of the longitudinal plates 21, which runs along the top surface O, into a slot 230 on the underside of the clamping strip 23. In this way, not only are all the lamella plates 22 aligned on their upper sides, but the mounting flanges 231 with bores 232 provided at the ends of the clamping strip 23 are also congruent with the bores 204 in the mounting surfaces 203 on the stone plates 20, allowing for permanent fixing, for example, by means of screws. In addition, the support rods 24 with rollers 25 can then be attached to these flanges 231.

[0033] The assembly of the lamellar module 2 according to the invention is further facilitated by the fact that the end plates with the upper flange 202 can be easily grasped and transported by a suitable lifting device. The longitudinal plates 21 are also Figure 5with bores 213 formed on the upper surface O and the lamellar plates 22 according to Figure 6 designed with corresponding bores 221 for the attachment of such a lifting device in order to be able to move the components mechanically.

[0034] It is therefore possible to assemble a lamella module 2 almost without tools using detachable plug connections between the end plates 20, the lamella plates 22 and the longitudinal plates 21 connecting them. During operation of these lamella modules 2, the water to be cleaned is introduced into the spaces between adjacent lamella plates 22 through openings 211 formed below the plug slots 212 in the longitudinal plates 21, so that the sediments can settle in a manner known per se.

[0035] By varying the number and size of the individual end plates 20, longitudinal plates 21 and / or lamellar plates 22, a lamellar module 2 can be varied to such an extent that differently sized settling basins 1 can be completely filled without dead spaces.

[0036] In the exemplary embodiment according to the Figure 9 Furthermore, a round settling basin 1' is visible, which is equipped with lamellar modules 2 as shown in the illustration. Figure 10 is filled in a ring shape. In contrast to the lamella module 2 according to the Figures 1 to 8 This lamella module 2 is characterized according to Figure 10 this is achieved by the fact that, starting from the right end plate 20 to the left end plate 20, the lamella plates 22 held on the longitudinal plates 21 have progressively increased widths, so that the lamella module 2, viewed in the vertical projection and in the graphic representation according to Figure 10is designed to widen conically from right to left. If such conically widening lamellar modules 2 are formed according to the illustration in Figure 9 When their longitudinal plates 21 are joined together, a circular arrangement is formed which is suitable for insertion into circular settling basins 1' without the formation of dead spaces. Reference symbol list:

[0037] 1: Settling tank 2: Slat module 10: Longitudinal wall 11: Transverse wall 12: Partition wall 13: Support beam 20: End plate 21: Longitudinal plate 22: Slat plate 23: Clamping strip 24: Support rod 25: Roller 26: Crossbeam 200: Slot 201: Tension slot 202: Flange 203: Mounting surface 204: Mounting hole 210: End hook 211: Opening 212: Slot 213: Mounting hole 220: Slot 221: Mounting hole 230: Insert slot 231: Mounting flange 232: Hole 260: Plug recess 261: End tension hook O: Top edge U: Bottom edge

Claims

1. Lamellar module (2) of an inclined clarifier with a plurality of lamella plates (22) arranged parallel to each other and held at an angle to the horizontal in the installed state, characterized by the fact that the lamella module (2) is designed as a plug-in system with end plates (20) between which several longitudinal plates (21) run and the lamella plates (22) are held between the end plates (20) on the longitudinal plates (21), wherein the connections between end plates (20) and longitudinal plates (21) and / or between the longitudinal plates (21) and the lamella plates (22) are designed as detachable plug connections.

2. Lamella module (2) according to claim 1, characterized by the fact that The end plates (20) of each longitudinal plate (21) have an arrangement of plug slots (200) into which corresponding end-protruding hooks (210) of the longitudinal plates (21) can be detachably inserted.

3. Lamella module (2) according to claim 1 or 2, characterized by the fact thatEach longitudinal plate (21) has a plurality of slot slots (212) extending obliquely to the horizontal from a longitudinal edge running along a top surface (O) in the installed state, and each lamella plate (22) has a slot slot (220) of a length corresponding to the length of the slot slots (212) of the longitudinal plate (21) from a longitudinal edge running along a bottom surface (U) in the installed state, such that the longitudinal plates (21) and the lamella plates (22) can be detachably slotted into each other at right angles in the area of ​​the slot slots (212, 220).

4. Lamella module (2) according to claim 3, characterized by the fact that the longitudinal plates (21) adjacent to the underside (U) which runs in the opposite direction to the top (O) have a plurality of openings (211).

5. Lamella module (2) according to one of claims 1 to 4, characterized by the fact thatIn the installed state, crossbeams (26) run below the lamella plates (22) between the end plates (20), which in the area of ​​their upper side facing the lamella plates (22) each have plug-in recesses (260) for inserting a lamella plate (22) and can be detachably inserted at the end face by means of protruding clamping hooks (261) into corresponding clamping slots (201) of the end plates (20).

6. Lamella module (2) according to one of claims 1 to 5, characterized by the fact that In the installed state, a top side (O) of the longitudinal plates (21) is detachably clamped into a terminal strip (23) in the area of ​​an insertion slot formed in the terminal strip (23).

7. Lamella module (2) according to one of claims 1 to 6, characterized by the fact that In its installed state, it is formed on the upper side with retaining rods (24) and rollers (25) held on the retaining rods (24), by means of which the lamella module (2) can be suspended on a support beam (13) in a settling basin (1, 1').

8. Lamella module (2) according to one of claims 1 to 7, characterized by the fact that the end plates (20) are designed with a top flange (202) and / or the longitudinal plates (21) and / or the lamellar plates with top bores (221, 232) for a lifting device.

9. Lamella module (2) according to any one of claims 1 to 8, characterized by the fact that the end plates (20), longitudinal plates (21) and / or lamellar plates (22) are made of sheet metal or plastic.

10. Lamella module (2) according to any one of claims 1 to 9, characterized by the fact that the lamella plates (22) are designed with progressively increasing widths from one end plate (20) to the other end plate (20), such that the lamella module (2) is conical when viewed in the vertical projection.

11. Settling basin (1, 1') with at least one lamella module (2) which can be suspended from the top of the settling basin (1, 1') according to one of the preceding claims.

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